Home / 128,858,533.31-177,824,805.14-70,911,781.31

Finding the Fourth Proportional to 128,858,533.31, 177,824,805.14 and 70,911,781.31

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Solution

The fourth proportional to 128,858,533.31, 177,824,805.14 and 70,911,781.31 is: 97,858,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,858,533.31 : 177,824,805.14 = 70,911,781.31 : x
  2. Step 2: Convert to fraction form
    128,858,533.31/177,824,805.14 = 70,911,781.31/x
  3. Step 3: Cross multiply
    128,858,533.31x = 177,824,805.14 × 70,911,781.31
  4. Step 4: Simplify right side
    128,858,533.31x = 12,609,873,694,202,886
  5. Step 5: Solve for x
    x = 12,609,873,694,202,886/128,858,533.31
  6. Step 6: Final answer
    x = 97,858,274.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.